Description

2,3-Difluoro-4-Methoxybenzenesulfonylchloride is a high-purity, multi-functional chemical intermediate essential for advanced organic synthesis. Its core value lies in its reactive sulfonyl chloride group and strategically placed fluorine atoms, enabling precise molecular construction in complex chemical processes. This compound is critically needed by research and development chemists and process engineers in the pharmaceutical, agrochemical, and specialty materials industries for creating novel active ingredients and functional molecules.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of active pharmaceutical ingredients (APIs), particularly in the development of sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and pesticides, where the fluorine atoms enhance biological activity and environmental stability.
• Material Science Research: Serves as a precursor for creating specialized polymers, liquid crystals, and other functional materials with tailored properties.
• Chemical Derivatization Agent: Employed in analytical chemistry and proteomics for labeling and modifying biomolecules via sulfonylation reactions.
• Custom Synthesis & Contract Manufacturing: A vital starting material for custom synthesis projects and scale-up processes in fine chemical production.

Basic Information

Item	Detail
Product Name	2,3-Difluoro-4-Methoxybenzenesulfonylchloride
CAS No.	1341660-99-8
Molecular Formula	C7H5ClF2O3S
Molecular Weight	242.63 g/mol
Synonyms	2,3-Difluoro-4-methoxybenzenesulfonyl chloride; 4-Methoxy-2,3-difluorobenzenesulfonyl chloride; 2,3-Difluoro-4-methoxybenzene-1-sulfonyl chloride; 1-(Chlorosulfonyl)-2,3-difluoro-4-methoxybenzene; Benzenesulfonyl chloride, 2,3-difluoro-4-methoxy-; 2,3-Difluoroanisole-4-sulfonyl chloride
EINECS	Contact for details

Quality Control

Every batch of 2,3-Difluoro-4-Methoxybenzenesulfonylchloride is manufactured and tested under a strict quality management system. We ensure compliance with rigorous internal specifications, which are designed to meet the exacting standards of our global clientele in research and industrial-scale production. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Melting Point	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.